Post on 31-Jan-2020
Appendix E
HISTORICAL RESOURCES REPORT
ARCHAEOLOGICAL RESOURCES ANALYSIS
FOR
THE MASTER STORM WATER SYSTEM MAINTENANCE PROGRAM
SAN DIEGO, CALIFORNIA
PROJECT NO. 42891
Submitted to:
City of San DiegoStorm Water Division2781 Caminito Chollas
San Diego, California 92105
Prepared for:
Helix Environmental Planning7578 El Cajon Boulevard, Suite 200
La Mesa, California 91942
Prepared by:
AffinisShadow Valley Center
847 Jamacha RoadEl Cajon, California 92019
Mary Robbins-Wade, M.A. (RPA)Director of Cultural Resources
February 2008Revised July 2008
Revised October 2008Revised December 2008
Revised June 2009Revised March 2011Revised May 2011
Affinis Job No. 2215
USGS quadrangles: Escondido, Poway, Del Mar, La Jolla, Point Loma, La Mesa, National City, ImperialBeach, Otay Mesa (7.5' series)
Acreage: Keywords: San Diego County, City of San Diego, Master Storm Water System Maintenance
Program; coastal, archaeological background study
NATIONAL ARCHAEOLOGICAL DATA BASE INFORMATION
Authors: Mary Robbins-Wade Consulting firm: Affinis, 847 Jamacha Road, El Cajon, California 92019 Report Date: February 2008, Revised July 2008, Revised October 2008;
Revised December 2008; Revised June 2009; Revised March2011; Revised May 2011
Report Title: Archaeological Resources Analysis for the Master Storm WaterSystem Maintenance Program, San Diego, California. ProjectNo. 42891
Submitted to: City of San Diego, Storm Water Division, 2781 CaminitoChollas, San Diego, California 92105
Submitted by: Helix Environmental Planning, 7578 El Cajon Boulevard, Suite200, La Mesa, California 91942
Contract number: Affinis Job No. 2215USGS quadrangles: Escondido, Poway, Del Mar, La Jolla, Point Loma, La Mesa,
National City, Imperial Beach, Otay Mesa (7.5' series)Acreage: Keywords: San Diego County, City of San Diego, Master Storm Water
System Maintenance Program; coastal, archaeologicalbackground study
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TABLE OF CONTENTS
LIST OF ACRONYMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
MANAGEMENT SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1
I. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1PROJECT LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1PROJECT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1CULTURAL RESOURCES STUDY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
II. ENVIRONMENTAL SETTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7PHYSICAL AND BIOLOGICAL ENVIRONMENT . . . . . . . . . . . . . . . . . . . . . . . . 7CULTURAL ENVIRONMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
III. RESEARCH METHODS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
IV. KNOWN RESOURCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17SAN DIEGUITO HYDROLOGIC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17PEÑASQUITOS HYDROLOGIC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17SAN DIEGO HYDROLOGIC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19PUEBLO SAN DIEGO HYDROLOGIC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . 20SWEETWATER HYDROLOGIC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22TIJUANA HYDROLOGIC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22OTAY HYDROLOGIC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
V. RESOURCE POTENTIAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25LAND USE AND SETTLEMENT PATTERN . . . . . . . . . . . . . . . . . . . . . . . . . . 25BURIED SITE POTENTIAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26PREVIOUS SURVEY COVERAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28CHANNEL CONDITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28CULTURAL RESOURCE SENSITIVITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
VI. IMPACTS AND MITIGATION MEASURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35SIGNIFICANCE CRITERIA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35SIGNIFICANCE OF IMPACTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37MITIGATION MEASURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
VII. INDIVIDUALS AND AGENCIES CONSULTED . . . . . . . . . . . . . . . . . . . . . . . . . . 51
VIII. PERSONNEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
IX. REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
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FIGURES
1 Regional Location Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Study Area Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Cultural Resources Sensitivity by Channel/Basin . . . . . . . . . . . . . . . . . . . . . . 33
TABLES
1. Cultural Resources Within 300 ft (100 m) of Channel/Basin Segments, San DieguitoHydrologic Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2. Cultural Resources Within 300 ft (100 m) of Channel/Basin Segments, PeñasquitosHydrologic Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3. Cultural Resources Within 300 ft (100 m) of Channel/Basin Segments, San DiegoHydrologic Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4. Cultural Resources Within 300 ft (100 m) of Channel/Basin Segments, Pueblo SanDiego Hydrologic Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5. Cultural Resources Within 300 ft (100 m) of Channel/Basin Segments, TijuanaHydrologic Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6. Cultural Resources Within 300 ft (100 m) of Channel/Basin Segments, OtayHydrologic Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7. Cultural Resources Sensitivity by Channel/Basin . . . . . . . . . . . . . . . . . . . . . . 29
CONFIDENTIAL APPENDIX(Bound Separately)
A Records Search Maps
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LIST OF ACRONYMS
ADRP Archaeological Data Recovery Program
ARDDRP Archaeological Research Design and Data Recovery Program
APE Area of Potential Effect
CEQA California Environmental Quality Act
CSVR Consultant Site Visit Record
CWP Clean Water Program for Greater San Diego
EAS Environmental Analysis Section
HRG Historic Resources Guide
IHA Individual Historic Assessment
IMP Individual Maintenance Plan
LDR Land Development Review
MC Maintenance Contractor
MLD Most Likely Descendent
MMC Mitigation Monitoring Coordinator
NAHC Native American Heritage Commission
PI Principal Investigator
RE Resident Engineer
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MANAGEMENT SUMMARY
Currently, the Storm Water Division provides flood control maintenance for storm waterfacilities in seven watersheds in the City of San Diego. Maintenance activities includeremoval of vegetation, trash, debris, and sediment. Many storm water facility segmentsinclude both natural and concrete-lined areas, which may require the use of a combinationof equipment and maintenance techniques to complete maintenance activities.
Recognizing the need for, and importance of, continuing the periodic inspection, cleaning,and maintenance of storm water channels and basins in the future, the City has proposedthe Master Storm Water System Maintenance Program (Master Program). The focus ofthe Master Program is to evaluate each of the City’s storm water facilities for maintenanceneeds.
The Master Program covers areas throughout the City of San Diego, from RanchoBernardo on the north to Otay Mesa and the Tijuana River on the south. Metropolitan SanDiego is in western San Diego County. The cultural resources study consisted of a recordssearch and assessment of the potential for encountering archaeological resources withinthe channels and basins included in the Master Program. The methods and results of thestudy, as well as recommendations for further, project-specific measures are detailed in thisreport.
A constraints-level study was conducted for the Master Program. This included review ofrecords obtained from the South Coastal Information Center (SCIC) at San Diego StateUniversity. Records reviewed included survey coverage maps, showing the extent ofprevious surveys and other archaeological studies, as well as site records of previouslyrecorded archaeological sites. The records search also included locations of historicstructures, as well as historic topographic maps. These data were obtained for eachchannel/basin segment and 300 ft (100 m) on either side of the segment. Althoughmaintenance work is anticipated to be generally confined to a narrow area along thechannel, the movement of equipment, etc. would likely necessitate a wider Area of PotentialEffect (APE). Therefore, the 600-ft wide APE (300 ft on either side of the channelcenterline) was addressed. This APE is also consistent with the cultural resources studyconducted for the Canyon Sewer Cleaning Program and Long-Term Canyon SewerMaintenance Program (Cook et al. 2003).
The records search data are presented by hydrologic unit. Sites were characterized basedon information in the site records, supplemented by personal knowledge, where applicable.Site significance was also taken from site records, where given, as well as personalknowledge, as applicable. In the majority of cases, site significance was not noted on thesite record, even when testing/ evaluation had been undertaken.
Predictive modeling based on land use/settlement patterns, topography, geology, and otherfactors was used to assess the potential for important undiscovered cultural resources tobe associated with storm water channels and/or basins. Based on these factors, as well
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as the records search results, the report summarizes whether there is a low, moderate, orhigh potential for cultural resources to be related to channels and basins included in theMaster Program.
No field work was undertaken for the current project, so there may be sites that werepreviously recorded which no longer exist. Conversely, there may be undocumented siteswith the study APE.
A number of known cultural resources within the study area APE have been determinedto be significant under CEQA and City of San Diego guidelines. In addition, there is apotential for significant buried cultural resources in several areas. It is important to notethat the probability assessment is based on very general assumptions and is intended toonly provide a Program level of analysis. As described in the discussion of mitigationmeasures, each project included within the proposed Master Program would undergo aproject-specific assessment referred to as an Individual Historic Assessment (IHA) todetermine the presence and potential impact on archaeological and historical resources atthe time maintenance is proposed. At that time, based on more precise data, a moreaccurate assessment would be made regarding the presence or absence of suchresources.
Implementation of the Master Program has the potential to have significant effects oncultural resources in two primary ways: access roads and maintenance. The potential forimpacts to cultural resources would generally be highest for activities that occur outside theimmediate areas of the channels (e.g., access roads and staging). Channel formationthrough natural erosion and/or excavation would often result in the low potential for culturalresources, although in some areas, alluvium has served to bury cultural resources.
The following measures shall be implemented prior to the first time maintenance occurswithin a storm water facility pursuant to the Master Program. Once a maintenance areahas been surveyed, significance has been determined, and mitigation measuresundertaken to protect (e.g., fencing or soil capping) and/or mitigate (e.g., data recovery)any affected historical resource, in accordance with the City’s Historical ResourcesGuidelines (HRG), no further historical resource investigation shall be required.Implementation of these measures would reduce impacts to historical resources and NativeAmerican values to below a level of significance.
Prior to commencement of the first occurrence of maintenance activity within a drainagefacility included in the Master Program, an archaeologist, meeting the qualificationsspecified by the City’s HRG, shall determine the potential for significant historical resourcesto occur in the maintenance area. If the archaeologist determines that the potential ismoderate to high, an IHA shall be prepared. Based on the IMP for the proposedmaintenance activity, the archaeologist shall determine the APE, which shall includeaccess, staging, and maintenance areas. The IHA shall include a field survey of the APEwith a Native American monitor, using the standards of the City’s HRG. In addition, thearchaeologist shall request a record search from the SCIC. Based on the results of the
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field survey and record search, the archaeologist shall conduct an archaeological testingprogram for any identified historical resources, using the standards of the City’s HRG. Ifsignificant historical resources are identified, they shall be taken to the Historical ResourcesBoard for designation as Historic Sites. Avoidance or implementation of an ArchaeologicalData Recovery Program (ADRP) and Archaeological Monitoring Program shall be requiredto mitigate project impacts to significant historical resources. The archaeologist shallprepare a report in accordance with City guidelines.
Prior to initiating any maintenance activity where the IHA identifies existing significantcultural resources within the APE, the following actions shall be taken. Mitigationrecommendations from the IHA shall be incorporated into the IMP. Typical mitigationmeasures would include but not be limited to: delineating resource boundaries onmaintenance plans; implementing protective measures such as fencing, signage orcapping; and selective monitoring during maintenance activities. If impacts to significantcultural resources cannot be avoided, the Principal Investigator (PI) shall prepare anArchaeological Research Design and Data Recovery Program (ARDDRP) for the affectedresources. The data recovery program would be implemented prior to initiating anymaintenance activity. The PI would prepare a report detailing the methods, analysis, andresults of the data recovery program.
Prior to initiating any maintenance activity where the IHA identifies a moderate to highpotential for the occurrence of significant cultural resources within the APE, the followingactions shall be taken. A qualified archaeological monitor and a qualified Native Americanmonitor shall be identified and be present during initial excavation/grading of undisturbedground. A pre-maintenance meeting shall be held on-site prior to commencing anymaintenance which may impact a significant cultural resource. The meeting shall includerepresentatives from the archaeological consulting firm (Monitor), Native American, StormWater Division, Mitigation Monitoring Coordinator (MMC), Resident Engineer (RE), andMaintenance Contractor (MC). The archaeological monitor shall explain the monitoringprocess. The monitor shall be present full-time during maintenance activities which couldresult in impacts to archaeological resources. In the event of a discovery, thearchaeological monitor shall direct the contractor to temporarily divert activities in the areaof discovery. The PI shall prepare a report that describes the results, analysis andconclusions of the monitoring program.
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I. INTRODUCTION
PROJECT LOCATION
The Master Storm Water System Maintenance Program (Master Program) covers areasthroughout the City of San Diego, from Rancho Bernardo on the north to Otay Mesa andthe Tijuana River on the south (Figures 1 and 2). Metropolitan San Diego is in western SanDiego County (Figure 1).
PROJECT DESCRIPTION
Currently, the Storm Water Division provides flood control maintenance of approximately32 miles of storm water facilities in seven watersheds in the City of San Diego.Maintenance activities include removal of vegetation, trash, debris, and sediment.Maintenance typically is accomplished with mechanical equipment (backhoes, skid-steers,and bulldozers). In some cases, maintenance is done with hand tools. The selection ofmaintenance method and equipment depend largely on the site-specific characteristics ofeach storm water facility, including size (width, depth), flow characteristics, surroundingland uses and vegetation, availability of access, and whether the storm water facility isconcrete-lined or natural bottom. Many storm water facility segments include both naturaland concrete-lined areas, which may require the use of a combination of equipment andmaintenance techniques to complete maintenance activities. Where possible, maintenanceactivities occur during the dry months to take advantage of low urban runoff flows within thestorm water facility.
The Storm Water Division maintains a priority maintenance list of channels based uponaccumulation of vegetation, debris, and/or sediment, as well as the flooding potential.
Recognizing the need for, and importance of, continuing the periodic inspection, cleaning,and maintenance of storm water channels and basins in the future, the City has proposedthe Master Program. The focus of the Master Program is to evaluate each of the City’sstorm water facilities for maintenance needs.
The objectives of the Master Program can be summarized as follows:
• Fulfill the mandate of Section 26.1 of the San Diego City Charter to provide essentialpublic works and public health services by maintaining the storm water conveyancesystem for the purpose of reducing flood risk;
• Develop a comprehensive program that will govern future maintenance of the City’sstorm water system in an efficient, economic, environmentally and aestheticallyacceptable manner for the protection of property and life;
• Ensure implementation of Best Management Practices (BMPs) and maintenanceprotocols during maintenance activities to avoid and/or minimize effects toenvironmental resources, and incorporate the analysis of the operational and
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5
pollution prevention benefits of each proposed project; and• Create an integrated comprehensive review process for annual maintenance
activities that will facilitate authorizations from local, state, and federal regulatoryagencies.
CULTURAL RESOURCES STUDY
The cultural resources study consisted of a records search and assessment of the potentialfor encountering archaeological resources within the channels and basins included in theMaster Program. Mary Robbins-Wade served as the project manager/ projectarchaeologist. The methods and results of the study, as well as recommendations forfurther, project-specific measures are detailed in this report.
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II. ENVIRONMENTAL SETTING
PHYSICAL AND BIOLOGICAL ENVIRONMENT
The project area is in the coastal plains of western San Diego County, where the climateis characterized as semi-arid, cool (Griner and Pryde 1976:Figure 3.4). The dominanttopographic feature of the coastal plain physiographic province is a series of marineterraces, or mesas. Three terraces are recognized within the metropolitan San Diego area:the La Jolla Terrace, at elevations from 50 to 70 ft above sea level; the next easterly, theLinda Vista Terrace, at elevations between 300 ft and 500 ft above sea level; and the mosteasterly, the Poway Terrace, which occurs at elevations between 800 and 1,200 ft abovesea level. “The Linda Vista Terrace is the most apparent and extensive of the threeterraces, although its surface has been considerably fragmented by stream incision. Itincludes most of the familiar ‘mesas’ of the San Diego metropolitan area” (McArthur1976:16). Marine terraces are dissected by canyon systems, incised by stream erosioninto the marine sedimentary rock. Many canyons were originally cut deeper than they aretoday, but with rising sea levels following periods of deglaciation, these canyon and valleyfloors were infilled and are now underlain by deposits of river sand and gravel (McArthur1976).
Precipitation in the San Diego area varies by elevation and distance from the coast. Thecoastal areas generally receive 10 to 12 inches of rainfall a year, with coastal mesasreceiving a few inches more than coastal valleys (Beauchamp 1986). The majority ofrainfall comes between October and March, and many seasonal drainages are dry bysummer.
Vegetation patterns in the San Diego area tend to be correlated with climatic and soilconditions. Beauchamp (1986) indicated that coastal sage scrub was originally thedominant vegetation type along the shore, the coastal mesas, and the coastal valleys.Coast live oak woodlands often form a dense canopy in canyon bottoms, on some north-facing slopes, and around the edges of small valleys. Associated species include poisonoak, gooseberry, and elderberry. Riparian woodland, a community of great importance aswildlife habitat, is composed mainly of winter-deciduous trees that require water near thesoil surface. Willow, white alder, California sycamore, ash, and cottonwood form densewoodlands in moist canyons and drainage bottoms. Other plants associated with thiscommunity include mugwort, mulefat, stinging nettle, and wild grape (Beauchamp 1986).
“The majority of Southern California natural vegetation was originally composed of woodyshrubs” (Beauchamp 1986:9). Inland sage scrub, consisting primarily of summer drought-deciduous aromatic shrubs and subshrubs, is dominated by California sagebrush, flat-topbuckwheat, white sage, and laurel sumac. Other associated plants include broombaccharis, San Diego sunflower, golden-yarrow, and sawtooth goldenbush. Sage scrubin coastal bluff areas includes many succulent species and is known as maritime succulentscrub (Beauchamp 1986)
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Chamise chaparral grows in areas similar to that of inland sage scrub but that receivegreater amounts of rainfall, or where rainfall is augmented by fog drip. Chamise is thedominant species in this community, which often includes mission manzanita, Clevelandsage, black sage, and coast spice bush as well. Mixed chaparral consists of shrubs withhard, broad leaves and stiff, woody stems. The composition of the community varies indifferent parts of the county. Along the coast, mixed chaparral is made up of coast whitelilac, Ramona lilac, Del Mar manzanita, holly-leaf redberry, smooth mountain mahogany,bush poppy, scrub oak, and chamise (Beauchamp 1986).
Grassland areas today are generally dominated by non-native species. These grasslandareas are often in locations that once supported native grasses, however.
Coastal salt marsh is found in areas with tidal influence, although the community may befound as far as several miles upstream of such influence. Common species in coastal saltmarshes include pickle-weed, glasswort, sea-lavender, salt-grass, salt-cedar, and dodder.Eelgrass and surfgrass are found in calm waters of coastal inlets. Freshwater marshvegetation grows in standing fresh water and is dominated by cattails, bulrushes,smartweed, and dock (Beauchamp 1986).
These various vegetation communities would have provided a number of plant speciesknown to have been used by the Kumeyaay and Luiseño people for food, medicine, tools,shelter, ceremonial and other uses (Bean and Shipek 1978; Christenson 1990; Hedges andBeresford 1986; Luomala 1978; White 1963). Many of the animal species found in thesecommunities would have been used by native populations as well. Rabbits were animportant food source, as were deer, numerous small mammals, and birds. Fish andshellfish were obtained from open coast and lagoon environments.
CULTURAL ENVIRONMENT
General Culture History
Several summaries discuss the prehistory of San Diego County and provide a backgroundfor understanding the archaeology of the general project area. Moratto's (1984) review ofthe archaeology of California contains important discussions of Southern California,including the San Diego area. Bull (1983, 1987), Carrico (1987), Gallegos (1987), andWarren (1985, 1987) provide summaries of relatively recent work and interpretations. Thefollowing is a brief discussion of the culture history of the San Diego region.
Carter (1957, 1978, 1980), Minshall (1976) and others (e.g., Childers 1974; Davis 1968,1973) have long argued for the presence of Pleistocene humans in California, includingthe San Diego area. The sites identified as "early man" are all controversial. Carter andMinshall are best known for their discoveries at Texas Street and Buchanan Canyon. Thematerial from these sites is generally considered nonartifactual, and the investigativemethodology is often questioned (Moratto 1984).
9
The earliest accepted archaeological manifestation of Native Americans in the San Diegoarea is the San Dieguito complex, dating to approximately 10,000 years ago (Warren1967). The San Dieguito complex was originally defined by Rogers (1939), and Warrenpublished a clear synthesis of the complex in 1967. The material culture of the SanDieguito complex consists primarily of scrapers, scraper planes, choppers, large blades,and large projectile points. Rogers considered crescentic stones to be characteristic of theSan Dieguito complex as well. Tools and debitage made of fine-grained greenmetavolcanic material, locally known as felsite, were found at many sites which Rogersidentified as San Dieguito. Often these artifacts were heavily patinated. Felsite tools,especially patinated felsite, came to be seen as an indicator of the San Dieguito complex.Until relatively recently, many archaeologists felt that the San Dieguito culture lacked millingtechnology and saw this as an important difference between the San Dieguito and La Jollacomplexes. Sleeping circles, trail shrines, and rock alignments have also been associatedwith early San Dieguito sites. The San Dieguito complex is chronologically equivalent toother Paleoindian complexes across North America. San Dieguito material underlies LaJolla complex strata at the C. W. Harris site in San Dieguito Valley (Warren, ed. 1966).
The traditional view of San Diego prehistory has the San Dieguito complex followed by theLa Jolla complex at least 7000 years ago, possibly as long as 9000 years ago (Rogers1966). The La Jolla complex is part of the Encinitas tradition and equates with Wallace's(1955) Millingstone Horizon. The Encinitas tradition is generally "recognized bymillingstone assemblages in shell middens, often near sloughs and lagoons" (Moratto1984:147). "Crude" cobble tools, especially choppers and scrapers, characterize the LaJolla complex (Moriarty 1966). Basin metates, manos, discoidals, a small number of Pintoseries and Elko series points, and flexed burials are also characteristic.
Warren et al. (1961) proposed that the La Jolla complex developed with the arrival of adesert people on the coast who quickly adapted to their new environment. Moriarty (1966)and Kaldenberg (1976) have suggested an in situ development of the La Jolla people fromthe San Dieguito. Moriarty has since proposed a Pleistocene migration of an ancestralstage of the La Jolla people to the San Diego coast. He suggested this Pre-La Jollacomplex is represented at Texas Street, Buchanan Canyon, and the Brown site (Moriarty1987).
Since the 1980s, archaeologists in the region have begun to question the traditionaldefinition of San Dieguito people simply as makers of finely crafted felsite projectile points,domed scrapers, and discoidal cores, who lacked milling technology. The traditionaldefining criteria for La Jolla sites (manos, metates, "crude" cobble tools, and reliance onlagoonal resources) have also been questioned (Bull 1987; Cárdenas and Robbins-Wade1985; Robbins-Wade 1986). There is speculation that differences between artifactassemblages of "San Dieguito" and "La Jolla" sites reflect functional differences rather thantemporal or cultural variability (Bull 1987; Gallegos 1987). Gallegos (1987) has proposedthat the San Dieguito, La Jolla, and Pauma complexes are manifestations of the sameculture, with differing site types "explained by site location, resources exploited, influence,innovation and adaptation to a rich coastal region over a long period of time" (Gallegos
10
1987:30). The classic "La Jolla" assemblage is one adapted to life on the coast andappears to continue through time (Robbins-Wade 1986; Winterrowd and Cárdenas 1987).Inland sites adapted to hunting contain a different tool kit, regardless of temporal period(Cárdenas and Van Wormer 1984).
Several archaeologists in San Diego, however, do not subscribe to the EarlyPrehistoric/Late Prehistoric chronology (see Cook 1985; Gross and Hildebrand 1998; Grossand Robbins-Wade 1989; Shackley 1988; Warren 1998). They feel that an apparentoverlap among assemblages identified as "La Jolla," "Pauma," or "San Dieguito" does notpreclude the existence of an Early Milling period culture in the San Diego region, whatevername is used to identify it, separate from an earlier culture. One problem thesearchaeologists perceive is that many site reports in the San Diego region presentconclusions based on interpretations of stratigraphic profiles from sites at whichstratigraphy cannot validly be used to address chronology or changes through time.Archaeology emphasizes stratigraphy as a tool, but many of the sites known in the SanDiego region are not in depositional situations. In contexts where natural sources ofsediment or anthropogenic sources of debris to bury archaeological materials are lacking,other factors must be responsible for the subsurface occurrence of cultural materials. Thesubsurface deposits at numerous sites are the result of such agencies as rodent burrowingand insect activity. Recent work has emphasized the importance of bioturbative factors inproducing the stratigraphic profiles observed at archaeological sites (see Gross 1992).Different classes of artifacts move through the soil in different ways (Bocek 1986;Erlandson 1984; Johnson 1989), creating vertical patterning (Johnson 1989) that is notculturally relevant. Many sites which have been used to help define the culture sequenceof the San Diego region are the result of just such nondepositional stratigraphy.
The Late Prehistoric period is represented by the San Luis Rey complex in northern SanDiego County and the Cuyamaca complex in the southern portion of the county. The SanLuis Rey complex is the archaeological manifestation of the Shoshonean predecessors ofthe ethnohistoric Luiseño (named for the San Luis Rey Mission). The Cuyamaca complexrepresents the Yuman forebears of the Kumeyaay (Diegueño, named for the San DiegoMission). Agua Hedionda is traditionally considered to be the point of separation betweenLuiseño and Northern Diegueño territories.
Elements of the San Luis Rey complex include small, pressure-flaked projectile points(Cottonwood and Desert Side-notched series); milling implements, including mortars andpestles; Olivella shell beads; ceramic vessels; and pictographs (True et al. 1974). Of theseelements, mortars and pestles, ceramics, and pictographs are not associated with earliersites. True noted a greater number of quartz projectile points at San Luis Rey sites thanat Cuyamaca complex sites, which he interpreted as a cultural preference for quartz (True1966). He considered ceramics to be a late development among the Luiseño, probablylearned from the Diegueño. The general mortuary pattern at San Luis Rey sites isungathered cremations.
11
The Cuyamaca complex, reported by True (1970), is similar to the San Luis Rey complex,differing in the following points:
1. Defined cemeteries away from living areas;2. Use of grave markers;3. Cremations placed in urns;4. Use of specially made mortuary offerings;5. Cultural preference for side-notched points;6. Substantial numbers of scrapers, scraper planes, etc., in contrast to small
numbers of these implements in San Luis Rey sites;7. Emphasis placed on use of ceramics; wide range of forms and several
specialized items;8. Steatite industry;9. Substantially higher frequency of milling stone elements compared with San
Luis Rey;10. Clay-lined hearths (True 1970:53-54).
Both the San Luis Rey and Cuyamaca complexes were defined on the basis of village sitesin the foothills and mountains. Coastal manifestations of both Luiseño and Kumeyaay differfrom their inland counterparts. Fewer projectile points are found on the coast, and theretends to be a greater number of scrapers and scraper planes at coastal sites (Robbins-Wade 1986, 1988). Cobble-based tools, originally defined as "La Jolla", are characteristicof coastal sites of the Late Prehistoric period, as well (Cárdenas and Robbins-Wade1985:117; Winterrowd and Cárdenas 1987:56).
History
While Juan Rodriguez Cabrillo visited San Diego briefly in 1542, the beginning of thehistoric period in the San Diego area is generally given as 1769. It was that year that theRoyal Presidio and the first Mission San Diego were founded on a hill overlooking MissionValley. The Mission San Diego de Alcala was constructed in its current location five yearslater. The Spanish Colonial period lasted until 1820 and was characterized by religious andmilitary institutions bringing Spanish culture to the area and attempting to convert theNative American population to Christianity. Mission San Diego was the first missionfounded in Southern California. Mission San Luis Rey, in Oceanside, was founded in 1798.
The Mexican period lasted from 1820 to 1846. Following secularization of the missions in1834, mission lands were given as large land grants to Mexican citizens as rewards forservice to the Mexican government. The society made a transition from one dominated bythe church and the military to a more civilian population, with people living on ranchos orin pueblos.
The American period began in 1846, and California became a state in 1850. MetropolitanSan Diego began to develop in 1850, but boomed in the 1880s. While the 1880s were aperiod of alternating boom and bust, by the 1890s, the city entered a time of steady growth.
12
Subdivisions such as Golden Hill, Sherman Heights, Logan Heights, Banker’s Hill, andUniversity Heights began in the 1890s. As the city continued to grow in the early 20th
century, the downtown’s residential character changed. Streetcars and the introduction ofthe automobile allowed people to live farther from their downtown jobs. New suburbs weredeveloped in Hillcrest, North Park, Mission Hills, and Normal Heights, as well as PointLoma, Ocean Beach, Pacific Beach, and Mission Beach. In the post-World War II years,San Diego grew significantly, with new jobs created in the aircraft industry, shipbuilding,fishing, and other enterprises.
13
III. RESEARCH METHODS
A constraints-level study was conducted for the Master Program. This included review ofrecords obtained from the South Coastal Information Center at San Diego State University.Records reviewed included survey coverage maps, showing the extent of previous surveysand other archaeological studies, as well as site records of previously recordedarchaeological sites. The records search also included locations of historic structures, aswell as historic topographic maps. These data were obtained for each channel/basinsegment and 300 ft (100 m) on either side of the segment. Although maintenance work isanticipated to be generally confined to a narrow area along the channel, the movement ofequipment, etc. would likely necessitate a wider Area of Potential Effect (APE). Therefore,the 600-ft wide APE (300 ft on either side of the channel centerline) was addressed. ThisAPE is also consistent with the cultural resources study conducted for the Canyon SewerCleaning Program and Long-Term Canyon Sewer Maintenance Program (Cook et al.2003).
Sites were plotted on USGS topographic maps (Confidential Appendix A), and data relatingto site type, dates of original site recording and latest site updates, and site significancewere recorded for each site within the study APE. These data are presented by hydrologicunit in the Known Resources section.
Based on the survey coverage maps, an attempt was made to estimate the percentage ofeach channel/basin segment that had been surveyed for cultural resources, in order to aidin assessing the potential for cultural resources. Other factors evaluated in order to assessthe potential for cultural resources within a segment were topographic features, such as thesteepness of slopes, the degree of past disturbance, and the potential for buried culturalresources, due to alluvium or other factors. In some cases, the channel itself is quitedisturbed (or concrete-lined), but the surrounding area has a potential for culturalresources, which could be subject to impacts from storm water facility maintenance. Thesensitivity of each channel segment/basin is presented in the Resource Potential section.
No field work was undertaken for the current project, so there may be sites that werepreviously recorded which no longer exist. Conversely, there may be undocumented siteswith the study APE.
In order to be consistent with a similar cultural resources study conducted for the CanyonSewer Cleaning Program and Long-Term Canyon Sewer Maintenance Program (Cook etal. 2003), the current study uses the same site type descriptions used in that study. Thesedescriptions are presented verbatim here.
Habitation sites. Prehistoric habitation sites were occupied seasonally oron a semi-permanent basis in order to exploit seasonally available resources.Such sites contain a wide variety of artifact types indicating that a range ofactivities were carried out on-site. The range of activities expected athabitation sites includes food preparation, milling, cooking, production of a
14
wide range of tools, construction, ceramic production, leather working, basketweaving, and ritual activities. Subsurface midden or refuse depositsreflecting the length and intensity of occupation are expected at habitationsites.
Temporary Camps. A variety of artifact types are expected at temporarycamps, reflecting the range of activities carried out on-site. Activities carriedout at temporary camps might include any of the activities carried out athabitation sites, but the range of activities is expected to be more restricted.Midden deposits at temporary camps are shallow or non-existent, reflectingthe short-term nature of occupation.
Artifact Scatter. Artifact scatters are defined as a surface scatter of artifactssuch as ceramics, flaked stone, and ground stone without a subsurfacedeposit. Some animal bone and/or shell may also be present. Artifactscatters may represent an extractive or special activity area, or a temporarystopping place.
Lithic Scatter. Lithic scatters are defined as low-density scatters ofdebitage, cores, and other flaked stone debris. They lack diagnostic artifactswhich are specific to particular periods and functions.
Bedrock Milling. Bedrock milling is defined as milling features located onbedrock outcrops or large boulders. Such features include mortars, basinmetates, and milling slicks. Mortars are deep, conical basins ground into therock surface. They were used in conjunction with elongated pestles to crushand grind acorns. Basin metates are generally shallow bowl-shapeddepressions ground into the rock surface. They were used with rounded,hand-sized manos or grinding stones to grind seeds, such as chia. Slicks aresmooth areas of the rock surface which have developed a polish as a resultof grinding. They were produced as a result of grinding seeds with a hand-held mano. A surface artifact scatter may be associated with the millingfeatures. However, if the scatter is dense or if a subsurface component isidentified, the bedrock milling is identified as part of a habitation site.
Quarry. A quarry site is defined as an area where lithic (stone) raw materialwas procured. Quarry sites are extractive sites to which work groups camewith the express purpose of procuring stone suitable for tool production. Asthese sites were only briefly visited as needed, they do not generally containmaterial associated with habitation sites.
Shell Midden. Shell deposits may or may not be associated with othercultural material. If the deposit is not associated with a complex assemblage,it may represent a locus where shellfish were processed. If the shell is
15
associated with subsurface deposits reflecting a range of activities, such asmilling and tool production, it is classified as a habitation camp or temporarycamp.
Historic Sites. A number of historic site types have been identified. Theseinclude trash scatters, habitation sites, historic buildings and structures [Cooket al. 2003:14-15].
Rock Art. This site type was not included in the Canyon Sewer Cleaning Program andLong-Term Canyon Sewer Maintenance Program report (Cook et al. 2003), but one site inthe current study area falls into this category. “Rock art” includes petroglyphs, patternsetched into rock walls or boulders; and pictographs, patterns “painted” on the rocks usinga variety of pigments. Petroglyphs and pictographs tend to be associated with ceremonialor ritual uses and are generally considered culturally significant by the Native Americancommunity.
16
17
IV. KNOWN RESOURCES
This section presents the records search data by hydrologic unit. Site types are describedin the Methods section. The sites were characterized based on information in the siterecords, supplemented by personal knowledge, where applicable. Site significance wasalso taken from site records, where given, as well as personal knowledge, as applicable.In the majority of cases, site significance was not noted on the site record, even whentesting/ evaluation had been undertaken.
SAN DIEGUITO HYDROLOGIC UNIT
Three sites are recorded within the study APE in the San Dieguito Hydrologic Unit (Table1). The significance of these sites is not noted on the site records. However, pictographsand petroglyphs, such as those recorded at CA-SDI-7, are generally of cultural importanceto the Native American community, making them significant cultural resources. CA-SDI-7is not recorded within the channel segment, but it is mapped within 300 ft (100 m) of thesegment. Because the site records for CA-SDI-7 and CA-SDI-581 have not been updatedsince their original recording in the late 1950s, it is not known if these sites still exist. Thereis no record that these sites have been tested to evaluate significance.
Table 1. Cultural Resources Within 300 ft (100 m) of Channel/Basin Segments, SanDieguito Hydrologic Unit
CA-SDI-
Number
Primary
Number
P-37-
Site type Originally
Recorded
By
Year
Recorded
Updated
By
Last
Update
Site
Significance
7 Rock art Haenszel 1957 NA NA Undetermined
581 Artifact
scatter
True n.d. NA NA Undetermined
11,023 Bedrock
milling
Cárdenas 1988 NA NA Undetermined
PEÑASQUITOS HYDROLOGIC UNIT
Twenty sites have been recorded within 300 ft (100 m) of the channel segments and basinsin the Peñasquitos Hydrologic Unit (Table 2). In addition, there are a number sites justoutside the study APE, attesting to the archaeological sensitivity of this portion of the studyarea. The Peñasquitos Unit includes the mouth of Carmel Valley, the western end ofCarroll Canyon, Los Peñasquitos Canyon, the Sorrento Valley area, and Rose Canyon, allrich in archaeological resources. The ethnohistoric village of Ystagua, in Sorrento Valley,includes deeply buried cultural deposits beneath a very disturbed surface. Theethnohistoric village of Rinconada, also in a very disturbed and developed context, includesmidden deposits to at least 2 m (see Winterrowd and Cárdenas 1985). Significant buried
18
deposits have also been found in Carmel Valley. The recorded sites include five lithicscatters and three artifact scatters that do not appear to represent significant resources,based solely on survey data. Three sites were described as temporary camps, and anotherwas called a temporary camp or habitation site. Four sites were described as habitations,including portions of the villages of Ystagua and Rinconada. Another portion of Ystaguawas described as a shell midden. Two sites, one called a lithic scatter and the other notdescribed (recorded by Mabel Harding during the 1950s), apparently have been destroyedby Sorrento Valley Road and decades of development, but there may be subsurfacecomponents of these sites, as they are in alluvial settings. The historic site was describedas an adobe structure. Prehistoric artifacts and marine shell were noted in the adobebricks.
Table 2. Cultural Resources Within 300 ft (100 m) of Channel/Basin Segments,Peñasquitos Hydrologic Unit
CA-SDI-
Number
Primary
Number
P-37-
Site type Originally
Recorded By
Year
Recorded
Updated
By
Last
Update
Site Significance
1010 Lithic
scatter
Kidder 1979 NA NA Destroyed?
2723 Temporary
camp
Rogers n.d. Pigniolo 2002 Undetermined
4605 Habitation Falk/Ball 1964 Pigniolo 2002 Undetermined
4609 Habitation.
Part of
village of
Ystagua
Krase 1972 NA NA Significant
4618 Habitation Hofmeister/
Bull
n.d. NA NA Undetermined
4647 Not
reported
Harding 1952 NA NA Destroyed?
5017 Habitation.
Village of
Rinconada
Rogers n.d. Bissell 1992 Significant
5204 Historic McCoy 1977 Bull 1978 Undetermined
5443 Shell
midden.
Part of
village of
Ystagua
Taylor 1977 NA NA Significant
5605 Lithic
scatter
Moriarty 1977 NA NA Undetermined
5606 Lithic
scatter
Moriarty 1977 NA NA Undetermined
5608 Lithic
scatter
Moriarty 1977 Gallegos,
Phillips,
and Kyle
1995 Not significant
5609 Lithic
scatter
Moriarty 1977 Gallegos,
Phillips,
and Kyle
1995 Not significant
CA-SDI-
Number
Primary
Number
P-37-
Site type Originally
Recorded By
Year
Recorded
Updated
By
Last
Update
Site Significance
19
5826 Habitation
or
temporary
camp
Fulmer n.d. NA NA Undetermined
10,438 Shell and
artifact
scatter
Cheever 1985 NA NA Undetermined
11,017 Artifact
scatter
Smith 1982 NA NA Undetermined
12,453 Artifact
scatter
Huey and
Bass
1991 NA NA Undetermined
12,557 Temporary
camp
Smith 1992 Bissell 1996 Undetermined
12,558 Shell
scatter
Smith 1992 Iversen 2005 Not significant;
destroyed?
17,374 Temporary
camp
Rogers n.d. NA NA Undetermined
Bold indicates that the resource is within or immediately adjacent to a channel or basin
SAN DIEGO HYDROLOGIC UNIT
Eleven archaeological sites have been recorded within the APE in the San DiegoHydrologic Unit (Table 3), which includes the San Diego River through Mission Valley tothe ocean, as well as portions of Alvarado Creek, Murphy Canyon, and the canyons ofFairmount Avenue and Montezuma Road. In addition, a number of other sites are recordedin the vicinity in these sensitive areas along the river, testifying to the potential foradditional, potentially significant resources. The historic site consists of the remains offoundations and support system of the historic Mission Bay Bridge. Two sites aredescribed as camps, apparently for shellfish processing, and three sites are shell middens.The five habitation sites include a large site in Mission Valley; deeply buried deposits thatrepresent the ethnohistoric village of Cosoy, also in Mission Valley; a habitation site in theFairmount Avenue canyon; two site numbers that have been assigned to the Mission SanDiego de Alcala, its associated buildings and archaeological deposits, and the ethnohistoricvillage of Nipaguay, located in the same area as the mission. Although much of this sitearea (including both CA-SDI-35 and CA-SDI-202) has been subject to a great deal ofdisturbance, overall the site is archaeologically significant and retains significance as aNative American cultural heritage resource. The alluvial setting of Mission Valley is knownto contain buried cultural deposits, and such deposits may be encountered duringimplementation of the Master Program.
20
Table 3. Cultural Resources Within 300 ft (100 m) of Channel/Basin Segments, SanDiego Hydrologic Unit
CA-SDI-
Number
Primary
Number
P-37-
Site type Originally
Recorded
By
Year
Recorded
Updated
By
Last
Update
Site
Significance
35 Historic and
habitation
Pilling 1949 Schaefer 1990 Significant
44 Temporary
camp
Nelson n.d. NA NA Undetermined
47 Temporary
camp
Nelson n.d. DeBarros 1996 Undetermined
202 Historic and
habitation
Treganza n.d. NA NA Significant
11,767 Habitation Rogers n.d. Huey and
Baker
1992 Undetermined
12,128 Shell
midden
Huey and
Baker
1992 NA NA Undetermined
12,863 Historic McKenna 1992 NA NA Destroyed
13,708 019016 Habitation Tift and
Strudwick
1994 NA NA Unknown
14,152 014380 Habitation.
Part of
village of
Cosoy
Schaefer 1996 NA NA Significant
16,288 024558 Shell
midden
Harris 2002 Recon 2007 Undetermined
16,290 024560 Shell
midden
Harris 2002 NA NA Undetermined
Bold indicates that the resource is within or immediately adjacent to a channel or basin
PUEBLO SAN DIEGO HYDROLOGIC UNIT
Twenty cultural resources have been recorded within 300 ft (100 m) of channel segmentsin the Pueblo San Diego Hydrologic Unit, including 10 historic sites, 4 Native Americanhabitation sites, and 1 site that includes both (Table 4). Other resources include a lithicscatter, a shell midden, and an isolated artifact. Two sites were determined not be cultural(one shell scatter was in fill soils, and one “Spanish Rancho” was found to be remnants ofa building that post-dates 1950). One of the historic resources is the historic police pistolrange, and one site included remains of a structure, but for the most part the historic sitesare trash deposits in canyons. The Pueblo San Diego Hydrologic Unit includes the Chollas
21
Creek and South Chollas Creek drainages with potential for buried cultural resources, bothhistoric and Native American.
Table 4. Cultural Resources Within 300 ft (100 m) of Channel/Basin Segments,Pueblo San Diego Hydrologic Unit
CA-SDI-
Number
Primary
Number
P-37-
Site type Originally
Recorded
By
Year
Recorded
Updated
By
Last
Update
Site
Significance
5580 Historic Norwood 1978 KEA 1996 Undetermined
10,252 Not cultural Stein 1985 Gross
and
Robbins-
Wade
1990 Not significant
10,528 Historic Wade 1986 Smith 2004 Significant
11,165 Habitation Reading 1978 Smith 1989 Undetermined
11,721 Historic Clevenger
and
Briggs
1990 NA NA Undetermined
12,087 Not cultural Gross 1990 Robbins-
Wade
and
Gross
1998 Not significant
12,090 Habitation
and historic
Pigniolo
and Briggs
1991 NA NA Undetermined
12,091 Habitation Pigniolo 1991 NA NA Undetermined
14,162 014494 Lithic
scatter
KEA 1996 NA NA Undetermined
14,163 014495 Historic KEA 1996 NA NA Undetermined
14,164 014496 Historic KEA 1996 NA NA Undetermined
14,165 014497 Historic KEA 1996 NA NA Undetermined
14,599 016029 Habitation Unknown n.d. Tift 1997 Destroyed
17,099 025706 Shell
midden
Hector
and
Zelenka
2004 NA NA Undetermined
17,203 025853 Habitation McGinnis 2004 Laguna
Mountain
2006 Undetermined
18,347 028330 Historic Jones &
Stokes
2005 NA NA Undetermined
CA-SDI-
Number
Primary
Number
P-37-
Site type Originally
Recorded
By
Year
Recorded
Updated
By
Last
Update
Site
Significance
22
014493 Historic Pigniolo
and Beck
1996 NA NA Undetermined
014998 Isolated
core
Affinis 1990 NA NA Not significant
024259 Historic Pierson 2001 NA NA Undetermined
024260 Historic Pierson 2001 NA NA Undetermined
Bold indicates that the resource is within or immediately adjacent to a channel or basin
SWEETWATER HYDROLOGIC UNIT
A single storm water facility segment is within the Sweetwater Hydrologic Unit. No culturalresources are recorded within the APE of this segment.
TIJUANA HYDROLOGIC UNIT
Six cultural resources have been recorded within the APE in the Tijuana Hydrologic UnitTable 5). These include three historic sites, two lithic scatters, and a large buried site thatappears to represent the ethnohistoric village of Millejo (CA-SDI-10,669). Although noneof the site records for CA-SDI-10,669 address the site’s significance, it appears to have thepotential to contain archaeologically and culturally significant deposits. One of the lithicscatter sites, CA-SDI-7208, covers hundreds of acres on Otay Mesa. This site has beentested and determined not to be a significant resource (except the portion of the site that hasbeen recorded as CA-SDI-11,424, which is far outside the project APE). One historic househas been destroyed, and no cultural material was found there during monitoring. Thesecond historic site consists of artifacts found in fill soils, and the third is a bridge on HollisterAvenue over the Tijuana River.
Table 5. Cultural Resources Within 300 ft (100 m) of Channel/Basin Segments, TijuanaHydrologic Unit
CA-SDI-
Number
Primary
Number
P-37-
Site type Originally
Recorded
By
Year
Recorded
Updated
By
Last
Update
Site
Significance
2611 Lithic
scatter
Moriarty
and Carter
1973 NA NA Undetermined
7208 Lithic
scatter
Ferguson 1979 Pierson 2002 Not significant
10,669 Habitation Shipek 1976 ACOE 1992 Undetermined
CA-SDI-
Number
Primary
Number
P-37-
Site type Originally
Recorded
By
Year
Recorded
Updated
By
Last
Update
Site
Significance
23
11,096 Historic Van
Wormer
1989 Van
Wormer
and
Coleman
1994 Destroyed
17,505 026708 Historic Pierson 2005 NA NA Not significant
17,240 025924 Historic Steely 2004 NA NA Significant
Bold indicates that the resource is within or immediately adjacent to a channel or basin
OTAY HYDROLOGIC UNIT
A single cultural resource has been recorded within the APE in the Otay Hydrologic Unit(Table 6). CA-SDI-13,072 was described as a 1930s homestead. The site was determinednot to be a significant resource.
Table 6. Cultural Resources Within 300 ft (100 m) of Channel/Basin Segments, OtayHydrologic Unit
CA-SDI-Number
PrimaryNumber P-37-
Site type OriginallyRecorded By
YearRecorded
Updated By
LastUpdate
SiteSignificance
13,072 Historic Wade 1993 NA NA Notsignificant
Bold indicates that the resource is within or immediately adjacent to a channel orbasin
24
25
V. RESOURCE POTENTIAL
Predictive modeling based on land use/settlement patterns, topography, geology, and otherfactors was used to assess the potential for important undiscovered cultural resources tobe associated with storm water channels and/or basins. Based on these factors, as well asthe records search results, Table 7 and Figure 3 summarize whether there is a low,moderate, or high potential for cultural resources to be related to channels and basinsincluded in the Master Program.
LAND USE AND SETTLEMENT PATTERN
Several past studies have addressed land use and settlement patterns in various parts ofSan Diego County (Christenson 1990; Gallegos and Carrico 1986; Graham et al. 1981;Laylander and Christenson 1988; Robbins-Wade 1990; Shackley 1980). These weresummarized by Gross (1993a) in his study of settlement pattern and predictive modeling ofsite locations for the cultural resources background study for the Clean Water Program ofGreater San Diego (CWP). Christenson (1990) addressed settlement pattern andenvironmental factors on a regional scale, looking at all of San Diego County occupied byYuman speakers at the time of Spanish contact. She identified landform, slope, type ofwater source nearby, distance to that water source, vegetation, and geology as importantvariables in site location, based on statistical tests in which there were significant differencesbetween the values for these variables exhibited by the sites versus non-site locations(Christenson 1990).
In summary, Christenson (1990) found that large habitation sites were located in valleyswithin 64 m (210 ft) of a spring or seasonal stream, with slopes no greater than 15 percent,generally in grassland areas. Small habitation sites and large resource processing siteswere similarly situated, in flat areas of valleys, drainages, or ridges within 90 m (295 ft) ofseasonal streams. These sites tended to occur in chaparral grasslands or southern oakwoodlands. “Small processing sites, which comprised the largest class of sites in thesample, were found in flat, grassy valley settings, often associated with granitic outcrops,within 160 meters [525 ft] of water. The water type was usually a seasonal stream. Lithicscatters were found in a variety of locations, but over 50 percent were on flat ridges,terraces, or mesas within 170 meters [558 ft] of water. The average distance of all sites towater was 135 meters [443 ft]” (Gross 1993a:VIII-3).
As previously noted, Christenson’s study addressed all of San Diego that was occupied byYuman speakers at the time of Spanish contact. So it included large areas outside thestudy area for the Master Program, including mountain and desert locales. Gross’s (1993a)study for the CWP generally addressed the same area as the current study and is quiteapplicable.
In the CWP study, hillside and slope locations were the most common landform on whichsites occurred (26.6 percent), followed closely by valley bottom locations (22.7 percent).Hilltop/ridge locations made up 17.1 percent of sites, and valley margin locations accounted
26
for 10.7 percent. “The remaining landforms contain 23% of the sites, and none of theseother landforms has more than 6% of the sites in the sample” (Gross 1993a:VIII-5).
In terms of geologic setting, Gross (1993a) found that quaternary alluvium was the mostcommon setting, “reflecting the large number of sites in valley bottom and valley marginsettings” (Gross 1993a:VIII-6). The second most common geologic setting for sites was theformations of the Poway and La Jolla groups, with cobbles that provided a source of lithicraw material (Hector and Gross 1988:49).
Gross used statistical analyses to determine whether the patterns noted in landform,underlying geology, elevation, distance to water, and other variables were meaningful, theresult of cultural selection, or the result of random distribution. These analyses indicatedthat elevation, distance to water, and differential between site elevation and elevation of thenearest water source are all important considerations in site location. Valley bottomlocations were favored, and slopes were avoided. “Geology may have been aconsideration as well, although the preference for quaternary alluvium probably reflects thechoice of valley bottom locations or the choice of locations near water” (Gross 1993a:VIII-10).
Based on these data, we would expect to encounter archaeological sites in valley bottomand valley margin locations. Sites would be much less likely in steep-sided canyons. Lithicquarrying or processing sites may be found on steeper slopes, but these sites wouldgenerally not be as significant as habitations or camp sites.
In addition to settlement patterns, the following factors were used to assess the likelihoodfor undiscovered cultural resources to occur.
BURIED SITE POTENTIAL
As part of the cultural resources background study for the CWP, Gross (1993b) alsoaddressed the potential for buried archaeological resources within the study area. His studyaddressed the various factors that may result in the burial of cultural material and thesettings in which these occur, as well as a discussion of why buried deposits are importantand why understanding depositional processes is vital for interpreting the archaeologicalrecord.
Most sites in the San Diego area are not found in depositional environments; culturalmaterial finds its way into a subsurface context through various turbational factors, such asburrowing animals.
Trampling, pit digging, and other earth-disturbing activities incorporateartifacts into the upper sediment layers at sites (Matthews 1965), but for a sitewith a long occupation history or repeated occupations, the kinds ofstratigraphic relationships expected under the geologic laws of stratigraphy(older materials are deeper than younger materials) do not hold unless that
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site received significant sediment deposition during or between occupations[Gross 1993b:IX-3].
Where sites are truly buried, though, they hold a great deal of research potential.
[S]ites buried in areas of relatively rapid sediment accumulation can providecritical data for addressing chronological and functional problems. If sedimentaccumulation is rapid enough to outstrip turbational forces, then buried sitesmay contain the remains of relatively short-term occupations which are readilyinterpretable as temporal and functional units. It may also be possible forsuch sites to be seriated to provide data on artifact assemblage changethrough time. This would facilitate the identification of time-sensitive artifactsor assemblages that could then be used to help unravel the occupationalhistories of long-term occupation sites in nondepositional environments. Inshort, sites with some of the greatest research potential are probably thoseleast likely to be detected during the kind of surface surveys that are generallyperformed prior to approval of land-disturbing activities [Gross 1993b:IX-1].
Although some cultural features, such as roasting pits, privies, and burials, may penetratethe site surface, for the most part, human activities take place on the ground surface.Artifacts and features arrive in a subsurface context through bioturbation or deposition. Thedepositional mechanisms of site burial include alluvium; colluvium; eolian (wind-blown)sediments; and anthropogenic (human-caused) mechanisms, such as purposeful burial ofmaterials or cut and fill activities. Floodplains are built up by a process of sedimentation,which tends to be episodic, but a great deal of sediment accumulation can occur, sometimesquite rapidly. Thus, buried archaeological sites can be expected to be found in suchprogram settings. Historically documented floods in San Diego include events in 1811,1861-1862, 1884, 1908, 1916, 1921, and 1927 (Gross 1993b; Lakeside Historical Society1985; Peet 1973).
Alluvial fans are also areas of active sediment accumulation. This landform is found at themouths of streams and in coastal valleys, where “easily-eroded sandstones provide anabundant source of sediments for deposition of the fans” (Gross 1993b:IX:2-3).
While eolian deposits may be present in some areas of San Diego, such as duneenvironments, these environments do not occur in the study APE.
A common anthropogenic mechanism of site burial that would be expected in many partsof the study APE is earth-moving activity. Land-leveling for development may destroy siteslocated on the high areas, but sites in low areas may be covered with fill soils. Culturalmaterial is sometimes transported from its original location to a secondary location throughsuch earth-moving activities as well.
In all of these depositional environments, if cultural material is deeply buried, it will only bevisible in erosional gullies or road cuts, through plowing and rodent activity, or in grading and
28
trenching. These sites often exhibit no surface evidence. Archaeological sites within thestudy APE that are known to have deeply buried deposits include the ethnohistoric villagesof Ystagua, Rinconada, Millejo, Cosoy, and Nipaguay. In addition to these sites, buriedcultural material may be expected in such areas as Sorrento Valley/Soledad Canyon, RoseCreek, Mission Valley, Chollas Valley, and the Tijuana River Valley. Other drainages in thestudy area have some degree of alluvial or colluvial sediments as well, but buried sites havenot yet been found in some areas, such as Alvarado Canyon. Many drainages in the studyarea do not offer wide drainage bottoms that would be preferred as a site setting.
PREVIOUS SURVEY COVERAGE
Based on the survey coverage maps, an attempt was made to estimate the percentage ofeach channel/basin segment that had been surveyed for cultural resources, in order to aidin assessing the potential for cultural resources. If 100 percent of a segment has beensurveyed for cultural resources and none have been recorded, it was concluded that thereis a low potential for encountering cultural resources there (thus, a low potential for impactsfrom storm water facility maintenance). If large portions of a facility have not beenpreviously surveyed, the potential for cultural resources was considered moderate to high,unless other factors pointed toward a low likelihood of resources (e.g., channel conditionand the predictive modeling factors addressed above).
CHANNEL CONDITION
Channels that are lined with concrete or have been excavated were considered to have alow potential, while natural channels generally were considered to have a moderate to highpotential for cultural resources. Again, factors such as degree of past disturbance andtopography may lessen the potential for cultural resources even in natural channels. Insome cases, the channel itself is quite disturbed (or concrete-lined), but the surroundingarea has a potential for cultural resources, which could be subject to impacts from stormwater facility maintenance.
CULTURAL RESOURCE SENSITIVITY
Based on the records search data, land use/settlement patterns, predictive modeling, andthe potential for buried sites, an assessment was made of the potential for encounteringcultural resources within each channel segment or basin. The sensitivity is rated low,moderate, or high, as summarized in Table 7 and illustrated in Figure 3. For instance, if aparticular channel has been surveyed for cultural resources in the past and none have beenfound, and the narrow drainage size would not make it a preferable site location, thesensitivity would be rated low. If a channel segment is within or adjacent to a knownarchaeological site, or in an area with buried cultural resources, it would be rated high. Inat least one case, a channel is within an archaeological site, but the site has been testedand determined not to be a significant resource under CEQA or the guidelines of the Cityof San Diego. In this case, the sensitivity was rated moderate.
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Table 7. Cultural Resources Sensitivity by Channel/Basin
Map No.* Facility Description Sensitivity
Channel
1 Rancho Bernardo Rd & Bernardo Center Dr Low
2 Rancho Bernardo Moderate
3 Rancho Bernardo Moderate
4 11044 Via San Marco Moderate
6 11689 Sorrento Valley Rd High
6a 3000 Industrial Court High
7 Soledad Creek Moderate
7-8 Los Peñasquitos Channel Moderate
9 11000 Roselle St / 11100 Flinkote Ave Moderate
10 Dunhill St & Roselle St Moderate
11-12 Soledad Creek Channel High
18 Maya Linda & Via Pasar Moderate
19 Candida & Via Pasar Moderate
32 Rose Creek Channel Low
33 Rose Creek Channel Low
34 Rose Creek Channel High
35 Rose Creek Channel High
36 Mission Bay High School Moderate
37 Pacific Beach Dr & Olney St Moderate
40-42 Chateau Channel Low
47 7969 & 7971 Engineer Rd Low
49-50 Murphy Canyon Channel Low
51 Red River Dr & Conestoga Dr Low
52 Camino del Arroyo Low
53 Cowles Mountain Channel Low
54 San Carlos Channel Low
55 West Morena Blvd High
55a West Morena Blvd High
55-57 Tecolote Creek Channel Moderate
58 Murphy Canyon Channel Low
58a Murphy Canyon Channel Low
59-60 Alvarado Channel Moderate
61-62 Alvarado Channel Low
64 Alvarado Channel Low
65 a-c Fairmont Channel Low
66 Montezuma Channel Moderate
Map No.* Facility Description Sensitivity
30
67 Auburn Creek Channel High
68 Auburn Creek Channel Moderate
69 Auburn Creek Channel High
70 Auburn Creek Channel Low
71-72 Chollas Creek Channel Low
76-77 Auburn Creek Channel High
78 Chollas Creek Channel High
79 Chollas Creek Channel Moderate
79a Delevan Dr Moderate
80 Chollas Creek Channel Low
81 Camino de la Reina & Camino del Arroyo Moderate
82 Nimitz Channel High
83 Famosa Blvd & Valeta St Low
84 Washington Channel Low
86 Pershing Channel High
89 Chollas Creek Channel Moderate
90 Imperial Ave & Gillette St Moderate
91 Chollas Creek Channel High
92 35th St & Martin Ave High
93 Chollas Creek Channel High
94-95 South Chollas Creek Channel High
97 South Chollas Creek Channel High
97a South Chollas Creek Channel High
98-99 South Chollas Creek Channel Moderate
100 42nd & J St Low
101 South Chollas Creek Channel High
103-104 South Chollas Creek Channel Moderate
105 Euclid Ave. & Castana St. Moderate
106-107 Encanto Channel Moderate
108-111 Encanto Channel Low
113-115 Jamacha Channel Low
117 Solola Channel Moderate
118-119 Solola Channel Moderate
120-121 Cottonwood Channel Low
122 Parkside Channel Low
123 Sanyo Channel Low
124 La Media Rd. & Airway Rd. Moderate
125 Camino Maquiladora & Cactus Rd. Low
Map No.* Facility Description Sensitivity
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126 Siempre Viva Rd. & Bristow Ct. Moderate
127 Britannia Blvd. & Bristow Ct. Moderate
128 Virginia Channel Moderate
129 Smythe Channel Moderate
130 Smythe Channel Moderate
131 Nestor Creek Channel High
132-133 Nestor Creek Channel Moderate
134 Nestor Creek Channel Moderate
136-137 Tocayo Channel Low
138a-c Tijuana River High
138-139 Smugglers Gulch Channel High
145-147 San Diego River Moderate
* The Storm Water Division initially assigned map numbers to all ofthe facilities within its jurisdiction. The non-sequential mapnumbers within the table are due to subsequent identification ofspecific facilities to be maintained in accordance with the proposedMaster Program.
32
146147
145
84
11
03
80
86
07
12
93
99
55
1009 08
9198
89
8382
81
77
34
3635
979594
92
90
72 71
66
64
626160
79
51
5756
47
40
37
19
04
59
5354
67
58
06
70
76
78
18
02
52
4142
68
69
33
32
01
111
115
117119
114113
110
65c
133
127
101
136
134
55a
104
103
58a
65b
65a
139
138
129
126
124137
131
79a
130
128
125123
122
121 120
105109108107100
132
06a
138c 138a
Cultural Resources Sensitivity By Channel/Basin
CITY OF SAN DIEGO MASTER STORMWATER SYSTEM MAINTENANCE PROGRAM
Figure 3
Job No: SDM-01 Date: 05/09/11
µI:\ArcGIS\S\SDM-01 StormDrainMaintenance\Map\ENV\Cultural\Fig3_Sensitivity.mxd -RK
12,500 0 12,5006,250
Feet
Low
Moderate
High
Cultural Resources Sensitivity
City Boundary
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VI. IMPACTS AND MITIGATION MEASURES
SIGNIFICANCE CRITERIA
Under the California Environmental Quality Act (CEQA), any object, building, structure, site,area, place, record, or manuscript which a lead agency determines to be historicallysignificant or significant in the architectural, engineering, scientific, economic, agricultural,educational, social, political, military, or cultural annals of California may be considered tobe an historical resource, provided the lead agency’s determination is supported bysubstantial evidence in light of the whole record. Generally, a resource shall be consideredby the lead agency to be “historically significant” if the resource meets the criteria for listingon the California Register of Historical Resources (Pub. Res. Code §5024.1, Title 14 CCRSection 4852) including the following:
A Is associated with events that have made a significant contribution to thebroad patterns of California’s history and cultural heritage;
B Is associated with the lives of persons important in our past;
C Embodies the distinctive characteristics of a type, period, region, or methodof construction, or represents the work of an important creative individual, orpossesses high artistic values, or:
D Has yielded or may be likely to yield information important in prehistory orhistory.
The California Register includes resources listed in or formally determined eligible for listingin the National Register of Historic Places, as well as some California State Landmarks andPoints of Historical Interest. Properties of local significance that have been designatedunder a local preservation ordinance (local landmarks or landmark districts) or that havebeen identified in a local historical resources inventory may be eligible for listing in theCalifornia Register and are presumed to be significant resources for purposes of CEQA,unless a preponderance of evidence indicates otherwise (Public Resource Code § 5024.1,14 CCR § 4850).
The most recent amendments to the CEQA Guidelines direct that lead agencies should firstevaluate an archaeological site to determine if it meets the criteria for listing in the CaliforniaRegister. If an archaeological site is an historical resource (i.e., listed or eligible for listingin the California Register) potential adverse impacts to it must be considered (PublicResource Code 21084.1 and 21083.2(l)). If an archaeological site is not an historicalresource, the effects of the project on those resources shall not be considered a significanteffect on the environment.
The City of San Diego has established the following criteria to be used in the determinationof significance under CEQA:
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An archaeological site must consist of at least three associated artifacts/ecofacts (within a 50 square meter area) or a single feature and must be atleast 45 years of age. Archaeological sites containing only a surfacecomponent are generally considered not significant unless demonstratedotherwise. Such site types may include isolated finds, bedrock millingstations, sparse lithic scatters, and shellfish processing stations. All otherarchaeological sites are considered potentially significant. The determinationof significance is based on a number of factors specific to a particular siteincluding site size, type, and integrity; presence or absence of a subsurfacedeposit, soil stratigraphy, features, diagnostics, and dateable material; artifactand ecofact density; assemblage complexity; cultural affiliation; associationwith an important person or event; and ethnic importance.
The determination of significance for historic buildings, structures, objects andlandscapes is based on age, location, context, association with an importantperson or event, uniqueness, and integrity.
A site will be considered to possess ethnic significance if it is associated witha burial or cemetery; religious social or traditional activities of a discrete ethnicpopulation; an important person or event as defined by a discrete ethnicpopulation; or the mythology of a discrete ethnic population [City of SanDiego, 1999].
Projects that have a federal nexus (e.g. permits or funding from a federal agency, crossingfederal lands) require compliance with federal regulations. The National HistoricPreservation Act (NHPA) and the regulations that implement Section 106 of the Act (36 CFR§ 800) require federal agencies to consider the effects of their actions on properties listed,or eligible for listing, in the National Register of Historic Places. Eligible resources areconsidered “historic properties”. The criteria for listing a property on the California Registerof Historical Resources were modeled after on those for the National Register of HistoricPlaces, so the significance criteria are quite similar under both sets of regulations.
Section 60.6 of 36 CFR Part 60 presents the criteria for evaluation of cultural resources fornomination to the National Register of Historic Places as follows:
The quality of significance in American history, architecture, archaeology, andculture is present in districts, sites, buildings, structures, and objects of Stateand local importance that possess integrity of location, design, setting,materials, workmanship, and association, and a) That are associated with events that have made a significant
contribution to the broad patterns of our history; or b) That are associated with the lives of persons significant in our past; orc) That embody the distinctive characteristics of a type, period or method
or construction, or that represent the work of a master, or that possess
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high artistic values, or that represent a significant and distinguishableentity whose components may lack individual distinction; or
d) That have yielded, or may be likely to yield, information important inprehistory or history [36 CFR Part 60].
SIGNIFICANCE OF IMPACTS
As addressed in the Known Resources section, a number of known cultural resources withinthe study area APE have been determined to be significant under CEQA and City of SanDiego guidelines. In addition, as summarized in Table 7, there is a potential for significantburied cultural resources in several areas. It is important to note that the probabilityassessment is based on very general assumptions and is intended to only provide aprogram level of analysis. As described in the discussion of mitigation measures below,each project included within the proposed Master Program would undergo a project-specificassessment referred to as an Individual Historic Assessment (IHA) to determine thepresence and potential impact on archaeological and historical resources at the timemaintenance is proposed. At that time, based on more precise data, a more accurateassessment would be made regarding the presence or absence of such resources.
Based on this, implementation of the Master Program has the potential to have significanteffects on cultural resources in two primary ways: access roads and maintenance. Thepotential for impacts to cultural resources would generally be highest for activities that occuroutside the immediate areas of the channels (e.g., access roads and staging). Channelformation through natural erosion and/or excavation would often result in the low potentialfor cultural resources, although in some areas, alluvium has served to bury culturalresources.
Access and Staging
Although most of the storm water facilities already have access routes that have beenhistorically used, new access routes may be required to some of the facilities as shown inthe Master Program. Access route creation would entail clearing and perhaps grubbing ofvegetation within the access route alignment to allow passage of maintenance vehicles.Any ground disturbance, including vegetation clearing, grubbing, and grading, could resultin significant impacts to any cultural resources within the APE.
Continued use of access routes by maintenance vehicles may also result in significantimpacts to cultural resources. While the impacts are likely to be confined to the surface ofthe site, cumulative impacts of vehicle traffic over time to significant sites may result insignificant impacts including displacement of cultural material and destruction of culturalmaterial and surface features. Any excavation within or adjacent to significant culturalresources would result in significant impacts to the integrity of significant resources.
On a case-by-case basis, staging, including equipment storage and temporary stockpilingof materials removed during maintenance, could impact cultural resources located alongside
38
channels and/or basins. Disruption of soil from equipment storage, as well as stockpiling,would impact any cultural resources located beneath these areas.
Maintenance
As stated earlier, the potential for impacting significant cultural resources is consideredlower within many of the channels and basins themselves. The basins have all beenexcavated. As a result, no resources would exist in these areas. Thus, no impacts wouldbe anticipated.
Where channels are lined with concrete or have been created through excavation, noresources would be anticipated to be present. Thus, maintenance of lined or excavatedchannels would not result in significant cultural resource impacts.
MITIGATION MEASURES
The following measures shall be implemented prior to the first time maintenance occurswithin a drainage facility pursuant to the Master Program. Once a maintenance area hasbeen surveyed, significance has been determined, and mitigation measures undertaken toprotect (e.g., fencing or soil capping) and/or mitigate (e.g., data recovery) any affectedhistorical resource, in accordance with the City’s Historical Resources Guidelines (HRG),no further historical resource investigation shall be required. Implementation of thesemeasures would reduce impacts to historical resources and Native American values tobelow a level of significance.
Mitigation Measure 4.4.1: Prior to commencement of the first occurrence of maintenanceactivity within a drainage facility included in the Master Program, an archaeologist, meetingthe qualifications specified by the City’s HRG, shall determine the potential for significanthistorical resources to occur in the maintenance area. If the archaeologist determines thatthe potential is moderate to high, an IHA shall be prepared. Based on the IMP for theproposed maintenance activity, the archaeologist shall determine the APE, which shallinclude access, staging, and maintenance areas. The IHA shall include a field survey of theAPE with a Native American monitor, using the standards of the City’s HRG. In addition,the archaeologist shall request a record search from the SCIC. Based on the results of thefield survey and record search, the archaeologist shall conduct an archaeological testingprogram for any identified historical resources, using the standards of the City’s HRG. Ifsignificant historical resources are identified, they shall be taken to the Historical ResourcesBoard for designation as Historic Sites. Avoidance or implementation of an ArchaeologicalData Recovery Program (ADRP) and Archaeological Monitoring Program shall be requiredto mitigate project impacts to significant historical resources. The archaeologist shallprepare a report in accordance with City guidelines. At a minimum, the IHA report shallinclude:
C Description of maintenance to be performed, including length, width, and depth;C Prehistory and History Background Discussion;
39
C Results of Record Search;C Survey Methods;C Archaeological Testing Methods;C Impact Analysis; andC Mitigation Recommendations, including avoidance or implementation of an ADRP
and archaeological monitoring program.
In the event that the IHA indicates that no significant historical resources occur within theAPE, or have the potential to occur within the APE, no further action shall be required.
Mitigation Measure 4.4.2: Prior to initiating any maintenance activity where the IHAidentifies existing significant historical resources within the APE, the following actions shallbe taken.
4.4.2.1. The Storm Water Division shall select a Principal Investigator (PI), who shallbe approved by the ADD Environmental Designee. The PI must meet the requirements ofthe City’s HRG.
4.4.2.2. Mitigation recommendations from the IHA shall be incorporated into the IMPto the satisfaction of the PI and the ADD Environmental Designee. Typical mitigationmeasures shall include but not be limited to: delineating resource boundaries onmaintenance plans; implementing protective measures such as fencing, signage or capping;and selective monitoring during maintenance activities.
4.4.2.3. If impacts to significant historical resources cannot be avoided, the PI shallprepare an Archaeological Research Design and Data Recovery Program (ARDDRP) forthe affected resources, with input from a Native American consultant, and the ARDDRPshall be approved by the ADD Environmental Designee. Based on the approved researchdesign, a phased excavation program shall be conducted, which will include the participationof a Native American. The sample size to be excavated shall be determined by the PI, inconsultation with City staff. The sample size shall vary with the nature and size of thearchaeological site, but need not exceed 15 percent of the overall resource area. The areainvolved in the ARDDRP shall be surveyed, staked and flagged by the archaeologicalmonitor, prior to commencing maintenance activities which could affect the identifiedresources.
4.4.2.4. A pre-maintenance meeting shall be held on-site prior to commencing anymaintenance that may impact a significant historical resource. The meeting shall includerepresentatives from the PI, the Native American consultant, Storm Water Division,Mitigation Monitoring Coordinator (MMC), Resident Engineer (RE), and MaintenanceContractor (MC). The PI shall explain mitigation measures which must be implementedduring maintenance. The PI shall also confirm that all protective measures (e.g. fencing,signage or capping) are in place.
40
4.4.2.5. If human remains are discovered in the course of conducting the ARDDRP,work shall be halted in that area and the following procedures set forth in the CaliforniaPublic Resources Code (Sec. 5097.98) and State Health and Safety Code (Sec. 7050.5) willbe taken:
C The PI shall notify the RE, and the MMC. The MMC will notify the appropriate SeniorPlanner in the Environmental Analysis Section (EAS).
C The PI shall notify the Medical Examiner, after consultation with the RE, either inperson or via telephone.
C Work will be redirected away from the location of the discovery and any nearby areareasonably suspected to overlay adjacent human remains until a determination canbe made by the Medical Examiner, in consultation with the PI, concerning theprovenience of the remains.
C The Medical Examiner, in consultation with the PI, shall determine the need for a fieldexamination to determine the provenience.
C If a field examination is not warranted, the Medical Examiner shall determine, withinput from the PI, if the remains are or are most likely to be of Native American origin.
C If Human Remains are determined to be Native American, the Medical Examinershall notify the Native American Heritage Commission (NAHC). The NAHC shallcontact the PI within 24 hours after the Medical Examiner has completedcoordination. The NAHC will identify the person or persons determined to be theMost Likely Descendent (MLD) and provide contact information. The PI willcoordinate with the MLD for additional coordination. If (1) the NAHC is unable toidentify the MLD, or the MLD fails to make a recommendation within 24 hours afterbeing notified by the Commission; or (2) the landowner or authorized representativerejects the recommendation of the MLD and mediation in accordance with PRC5097.94 (k) by the NAHC fails to provide measures acceptable to the landowner,then landowner or their authorized representative shall re-inter the human remainsand all associated grave goods with appropriate dignity, on the property in a locationnot subject to subsurface disturbance. Information on this process will be providedto the NAHC.
C If Human Remains are not Native American, the PI shall contact the MedicalExaminer and notify them of the historic era context of the burial. The MedicalExaminer shall determine the appropriate course of action with the PI and City staff(PRC 5097.98). If the remains are of historic origin, they shall be appropriatelyremoved and conveyed to the Museum of Man for analysis. The decision forreinterment of the human remains shall be made in consultation with MMC, EAS, thelandowner, and the Museum.
4.4.2.6. The PI shall be responsible for ensuring: (1) that all cultural materials collectedare cleaned, catalogued and permanently curated with an appropriate institution; (2) that aletter of acceptance from the curation institution has been submitted to MMC; (3) that allartifacts are analyzed to identify function and chronology as they relate to the history of thearea; (4) that faunal material is identified as to species; and (5) that specialty studies arecompleted, as appropriate. Curation of artifacts associated with the survey, testing and/or
41
data recovery for this project shall be completed in consultation with LDR and the NativeAmerican representative, as applicable.
4.4.2.7. The Archaeologist shall be responsible for updating the appropriate State ofCalifornia Department of Park and Recreation forms-DPR 523 A/B associated with theARDDRP in accordance with the City’s Historical Resources Guidelines, and submittal ofsuch forms to the SCIC with the Final Results Report.
4.4.2.8. The PI shall prepare a Draft Results Report (even if negative) that describesthe results, analysis and conclusions of the ARDDRP (with appropriate graphics). The MMCshall return the Draft Results Report to the PI for revision or for preparation of the FinalReport. The PI shall submit the revised Draft Results Report to MMC for approval. TheMMC shall provide written verification to the PI of the approved report. The MMC shallnotify the RE of receipt of all Draft Result Report submittals and approvals. The MMC shallnotify the RE of receipt of the Final Results Report.
Mitigation Measure 4.4.3: Prior to initiating any maintenance activity where the IHAidentifies a moderate to high potential for the occurrence of significant historical resourceswithin the APE, the following actions shall be taken:
4.4.3.1. Prior to Permit Issuance or Bid Opening/Bid AwardA. Entitlements Plan Check
1. Prior to permit issuance or Bid Opening/Bid Award, whichever isapplicable, the Assistant Deputy Director (ADD) Environmentaldesignee shall verify that the requirements for ArchaeologicalMonitoring and Native American monitoring have been noted on theappropriate maintenance documents.
B. Letters of Qualification have been submitted to ADD1. Prior to Bid Award, the applicant shall submit a letter of verification to
Mitigation Monitoring Coordination (MMC) identifying the PrincipalInvestigator (PI) for the project and the names of all persons involvedin the archaeological monitoring program, as defined in the City of SanDiego Historical Resources Guidelines (HRG). If applicable, individualsinvolved in the archaeological monitoring program must havecompleted the 40-hour HAZWOPER training with certificationdocumentation.
2. MMC will provide a letter to the applicant confirming the qualificationsof the PI and all persons involved in the archaeological monitoring ofthe project.
3. Prior to the start of work, the applicant must obtain approval from MMCfor any personnel changes associated with the monitoring program.
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4.4.3.2. Prior to Start of MaintenanceA. Verification of Records Search
1. The PI shall provide verification to MMC that a site specific recordssearch (1/4 mile radius) has been completed. Verification includes, butis not limited to a copy of a confirmation letter from South CoastInformation Center, or, if the search was in-house, a letter ofverification from the PI stating that the search was completed.
2 The letter shall introduce any pertinent information concerningexpectations and probabilities of discovery during trenching and/orgrading activities.
3. The PI may submit a detailed letter to MMC requesting a reduction tothe ¼ mile radius.
B. PI Shall Attend Precon Meetings1. Prior to beginning any work that requires monitoring; the Applicant shall
arrange a Precon Meeting that shall include the PI, MaintenanceManager (CM) and/or Grading Contractor, Resident Engineer (RE),Building Inspector (BI), if appropriate, and MMC. The qualifiedArchaeologist and Native American monitor shall attend anygrading/excavation related Precon Meetings to make comments and/orsuggestions concerning the Archaeological Monitoring program withthe Maintenance Manager and/or Grading Contractor.a. If the PI is unable to attend the Precon Meeting, the Applicant
shall schedule a focused Precon Meeting with MMC, the PI, RE,CM or BI, if appropriate, prior to the start of any work thatrequires monitoring.
2. Acknowledgment of Responsibility for Curation (CIP or Other PublicProjects)a. The applicant shall submit a letter to MMC acknowledging their
responsibility for the cost of curation associated with all phasesof the archaeological monitoring program.
3. Identify Areas to be Monitoreda. Prior to the start of any work that requires monitoring, the PI
shall submit an Archaeological Monitoring Exhibit (AME) basedon the appropriate maintenance documents (reduced to 11x17)to MMC for approval identifying the areas to be monitoredincluding the delineation of grading/excavation limits.
b. The AME shall be based on the results of a site specific recordssearch as well as information regarding the age of existingpipelines, laterals and associated appurtenances and/or anyknown soil conditions (native or formation).
c. MMC shall notify the PI that the AME has been approved.4. When Monitoring Will Occur
a. Prior to the start of any work, the PI shall also submit amaintenance schedule to MMC through the RE indicating whenand where monitoring will occur.
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b. The PI may submit a detailed letter to MMC prior to the start ofwork or during maintenance requesting a modification to themonitoring program. This request shall be based on relevantinformation such as review of final maintenance documentswhich indicate conditions such as age of existing pipe to bereplaced, depth of excavation and/or site graded to bedrock,etc., which may reduce or increase the potential for resourcesto be present.
5. Approval of AME and Maintenance Schedulea. After approval of the AME by MMC, the PI shall submit to MMC
written authorization of the AME and Maintenance Schedulefrom the CM.
4.4.3.3. During MaintenanceA. Monitor Shall be Present During Grading/Excavation/Trenching
1. The Archaeological monitor shall be present full-time duringgrading/excavation/trenching activities including, but not limited tomainline, laterals, jacking and receiving pits, services and all otherappurtenances associated with underground utilities as identified onthe AME and as authorized by the CM. The Native American monitorshall determine the extent of their presence during maintenancerelated activities based on the AME and provide that information to thePI and MMC. The Maintenance Manager is responsible fornotifying the RE, PI, and MMC of changes to any maintenanceactivities, such as in the case of a potential safety concern withinthe area being monitored. In certain circumstances OSHA safetyrequirements may necessitate modification of the PME.
2. The PI may submit a detailed letter to MMC during maintenancerequesting a modification to the monitoring program when a fieldcondition such as modern disturbance post-dating the previousgrading/trenching activities, presence of fossil formations, or whennative soils are encountered may reduce or increase the potential forresources to be present.
2. The monitor shall document field activity via the Consultant Site VisitRecord (CSVR). The CSVR’s shall be faxed by the CM to the RE thefirst day of monitoring, the last day of monitoring, monthly (Notificationof Monitoring Completion), and in the case of ANY discoveries. TheRE shall forward copies to MMC.
B. Discovery Notification Process 1. In the event of a discovery, the Archaeological Monitor shall direct the
contractor to temporarily divert trenching activities in the area ofdiscovery and immediately notify the RE or BI, as appropriate.
2. The Monitor shall immediately notify the PI (unless Monitor is the PI)of the discovery.
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3. The PI shall immediately notify MMC by phone of the discovery, andshall also submit written documentation to MMC within 24 hours by faxor email with photos of the resource in context, if possible.
C. Determination of Significance1. The PI and Native American monitor shall evaluate the significance of
the resource. If Human Remains are involved, follow protocol inSection 4.4.2.4 below.a. The PI shall immediately notify MMC by phone to discuss
significance determination and shall also submit a letter to MMCindicating whether additional mitigation is required.
b. If the resource is significant, the PI shall submit anArchaeological Data Recovery Program (ADRP) and obtainwritten approval of the program from MMC, CM and RE. ADRPand any mitigation must be approved by MMC, RE and/or CMbefore ground disturbing activities in the area of discovery willbe allowed to resume.(1) Note: For pipeline trenching projects only, the PI shall
implement the Discovery Process for Pipeline Trenchingprojects identified below under “D.”
c. If resource is not significant, the PI shall submit a letter to MMCindicating that artifacts will be collected, curated, anddocumented in the Final Monitoring Report. The letter shall alsoindicate that no further work is required.(1) Note: For Pipeline Trenching Projects Only. If the
deposit is limited in size, both in length and depth; theinformation value is limited and is not associated withany other resource; and there are no uniquefeatures/artifacts associated with the deposit, thediscovery should be considered not significant.
(2) Note: for Pipeline Trenching Projects Only: Ifsignificance can not be determined, the Final MonitoringReport and Site Record (DPR Form 523A/B) shallidentify the discovery as Potentially Significant.
D. Discovery Process for Significant Resources - Pipeline Trenching ProjectsThe following procedure constitutes adequate mitigation of a significantdiscovery encountered during pipeline trenching activities including but notlimited to excavation for jacking pits, receiving pits, laterals, and manholes toreduce impacts to below a level of significance: 1. Procedures for documentation, curation and reporting
a. One hundred percent of the artifacts within the trench alignmentand width shall be documented in-situ, to include photographicrecords, plan view of the trench and profiles of side walls,recovered, photographed after cleaning and analyzed and
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curated. The remainder of the deposit within the limits ofexcavation (trench walls) shall be left intact.
b. The PI shall prepare a Draft Monitoring Report and submit toMMC via the RE as indicated in Section VI-A.
c. The PI shall be responsible for recording (on the appropriateState of California Department of Park and Recreation forms-DPR 523 A/B) the resource(s) encountered during theArchaeological Monitoring Program in accordance with theCity’s Historical Resources Guidelines. The DPR forms shall besubmitted to the South Coastal Information Center for either aPrimary Record or SDI Number and included in the FinalMonitoring Report.
d. The Final Monitoring Report shall include a recommendation formonitoring of any future work in the vicinity of the resource.
4.4.3.4. Discovery of Human RemainsIf human remains are discovered, work shall halt in that area and the followingprocedures as set forth in the California Public Resources Code (Sec. 5097.98) andState Health and Safety Code (Sec. 7050.5) shall be undertaken:A. Notification
1. Archaeological Monitor shall notify the RE or BI as appropriate, MMC,and the PI, if the Monitor is not qualified as a PI. MMC will notify theappropriate Senior Planner in the Environmental Analysis Section(EAS).
2. The PI shall notify the Medical Examiner after consultation with the RE,either in person or via telephone.
B. Isolate discovery site1. Work shall be directed away from the location of the discovery and any
nearby area reasonably suspected to overlay adjacent human remainsuntil a determination can be made by the Medical Examiner inconsultation with the PI concerning the provenience of the remains.
2. The Medical Examiner, in consultation with the PI, will determine theneed for a field examination to determine the provenience.
3. If a field examination is not warranted, the Medical Examiner willdetermine with input from the PI, if the remains are or are most likelyto be of Native American origin.
C. If Human Remains ARE determined to be Native American1. The Medical Examiner will notify the Native American Heritage
Commission (NAHC) within 24 hours. By law, ONLY the MedicalExaminer can make this call.
2. NAHC will immediately identify the person or persons determined to bethe Most Likely Descendent (MLD) and provide contact information.
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3. The MLD will contact the PI within 24 hours or sooner after the MedicalExaminer has completed coordination, to begin the consultationprocess in accordance with the California Public Resource and Health& Safety Codes.
4. The MLD will have 48 hours from being granted access to the site tomake recommendations to the property owner or representative, forthe treatment or disposition with proper dignity, of the human remainsand associated grave goods.
5. Disposition of Native American Human Remains shall be determinedbetween the MLD and the PI,
6. The remains shall be re-interred if:a. The NAHC is unable to identify the MLD, OR the MLD failed to
make a recommendation within 48 hours after being notified bythe Commission; OR;
b. The landowner or authorized representative rejects therecommendation of the MLD and mediation in accordance withPRC 5097.94 (k) by the NAHC fails to provide measuresacceptable to the landowner.
7. To protect these sites, the landowner shall do one or more of thefollowing:(1) Record the site with the NAHC;(2) Record an open space or conservation easement; or(3) Record a document with the County.
8. Upon the discovery of multiple Native American human remains duringa ground disturbing land development activity, the landowner mayagree that additional conferral with descendants is necessary toconsider culturally appropriate treatment of multiple Native Americanhuman remains. Culturally appropriate treatment of such a discoverymay be ascertained from review of the site utilizing cultural andarchaeological standards. Where the parties are unable to agree onthe appropriate treatment measures the human remains and buriedwith Native American human remains shall be reinterred withappropriate dignity, pursuant to Section 5.c., above.
D. If Human Remains are NOT Native American1. The PI shall contact the Medical Examiner and notify them of the
historic era context of the burial.2. The Medical Examiner will determine the appropriate course of action
with the PI and City staff (PRC 5097.98).3. If the remains are of historic origin, they shall be appropriately removed
and conveyed to the Museum of Man for analysis. The decision forinternment of the human remains shall be made in consultation withMMC, EAS, the applicant department and/or Real Estate AssetsDepartment (READ) and the Museum of Man.
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4.4.3.5. Night and/or Weekend WorkA. If night and/or weekend work is included in the contract
1. When night and/or weekend work is included in the contract package,the extent and timing shall be presented and discussed at the PreconMeeting.
2. The following procedures shall be followed.a. No Discoveries
In the event that no discoveries were encountered during nightand/or weekend work, the PI shall record the information on theCSVR and submit to MMC via fax by 8AM of the next businessday.
b. DiscoveriesAll discoveries shall be processed and documented using theexisting procedures detailed in Sections 4.4.2.3 – DuringMaintenance, and 4.4.2.4 – Discovery of Human Remains.
c. Potentially Significant DiscoveriesIf the PI determines that a potentially significant discovery hasbeen made, the procedures detailed under Section 4.4.2.3 –During Maintenance shall be followed.
d. The PI shall immediately contact the RE and MMC, or by 8AMof the next business day to report and discuss the findings asindicated in Section 4.4.2.3-B, unless other specificarrangements have been made.
B. If night and/or weekend work becomes necessary during the course ofmaintenance1. The Maintenance Manager shall notify the RE or BI, as appropriate, a
minimum of 24 hours before the work is to begin.2. The RE or BI, as appropriate, shall notify MMC immediately.
C. All other procedures described above shall apply, as appropriate.
4.4.3.6. Post MaintenanceA. Submittal of Draft Monitoring Report
1. The PI shall submit two copies of the Draft Monitoring Report (even ifnegative), prepared in accordance with the Historical ResourcesGuidelines (Appendix C/D) which describes the results, analysis, andconclusions of all phases of the Archaeological Monitoring Program(with appropriate graphics) to MMC via the RE for review and approvalwithin 90 days following the completion of monitoring. a. For significant archaeological resources encountered during
monitoring, the basis for determining archaeological significanceand ADRP or Pipeline Trenching Discovery Process shall beincluded in the Draft Monitoring Report.
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b. Recording Sites with State of California Department of Parksand RecreationThe PI shall be responsible for recording (on the appropriateState of California Department of Park and Recreation forms-DPR 523 A/B) any significant or potentially significant resourcesencountered during the Archaeological Monitoring Program inaccordance with the City’s Historical Resources Guidelines,and submittal of such forms to the South Coastal InformationCenter with the Final Monitoring Report.
2. MMC shall return the Draft Monitoring Report to the PI via the RE forrevision or, for preparation of the Final Report.
3. The PI shall submit revised Draft Monitoring Report to MMC via the REfor approval.
4. MMC shall provide written verification to the PI of the approved report.5. MMC shall notify the RE or BI, as appropriate, of receipt of all Draft
Monitoring Report submittals and approvals.B. Handling of Artifacts
1. The PI shall be responsible for ensuring that all cultural remainscollected are cleaned and catalogued
2. The PI shall be responsible for ensuring that all artifacts are analyzedto identify function and chronology as they relate to the history of thearea; that faunal material is identified as to species; and that specialtystudies are completed, as appropriate.
C. Curation of artifacts: Accession Agreement and Acceptance Verification 1. The PI shall be responsible for ensuring that all artifacts associated
with the survey, testing and/or data recovery for this project arepermanently curated with an appropriate institution. This shall becompleted in consultation with MMC and the Native Americanrepresentative, as applicable.
2. The PI shall submit the Accession Agreement and catalogue record(s)to the RE or BI, as appropriate for donor signature with a copysubmitted to MMC.
3. The RE or BI, as appropriate shall obtain signature on the AccessionAgreement and shall return to PI with copy submitted to MMC.
4. The PI shall include the Acceptance Verification from the curationinstitution in the Final Monitoring Report submitted to the RE or BI andMMC.
D. Final Monitoring Report(s) 1. The PI shall submit one copy of the approved Final Monitoring Report
to the RE or BI as appropriate, and one copy to MMC (even ifnegative), within 90 days after notification from MMC of the approvedreport.
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2. The RE shall, in no case, issue the Notice of Completion until receivinga copy of the approved Final Monitoring Report from MMC whichincludes the Acceptance Verification from the curation institution.
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VII. INDIVIDUALS AND AGENCIES CONSULTED
Scott A. Mattingly South Coastal Information Center
VIII. PERSONNEL
The following persons participated in the preparation of this report:
Mary Robbins-Wade, M.A. (RPA) Director of Cultural Resources
G. Timothy Gross, Ph.D. (RPA) Principal Archaeologist
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